Type-writer attachment.



No. 7I6,0I|. Patented Dec. I6, I902.- C. F. ECKERT.

TYPE WRITER ATTACHMENT.

(Application filed. July 13, 1901.)

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WITNESSES: IN VEN TOR. m 1W 7 744 WW, BY

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No. 7|6,0l l. Patented Dec. l6, I902.

C. F. ECKEBT. TYPE WRITER. ATTACHMENT.

(Application filed July 13, 1901.)

2 Sheets-Shae? 2.

(N9 Model.)

INVENTOR.

ATTORNEY.

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UNITED STATES- -ATENT OFFICE.

CHARLES F. EOKERT, OF INDIANAPOLIS, INDIANA, ASSIGNOR TO WILLIAM M. BIRD, JR., OF INDIANAPOLIS, INDIANA.

- TYPE-WRITER ATTACHMENT.

SPECIFICATION forming part of Letters PatentNo. 716,011, dated December 16, 1902.

' Application filed July 1 3,1901. semi No. 68,161. (to model.)

T at whom; it may concern:

Be it known that I, CHARL S F. EOKERT, of Indianapolis, county of Marion, and State of Indiana, have invented a certain new and useful Type-Writer Attachment; and I do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawings, in which like letters refer to like parts.

The object of this attachment is to stop the action of the paper-feed before the bottom of the sheet of paper is reached or at any other point on the sheet of paper where it may be desired to stop the writing and be able to adjust the paper-feed so that it will stop when such point on the sheet of paper as may be desired has been reached.

Another object is to limit the action of the paper-feeding mechanism in both directions. In other words, where the platen is a part of the paper-feed its forward rotation while writing is limited and its rearward or return movement is also limited.

Another object of the invention is to provide a stop for limiting the action of the machine while writing on the sheet of paper, which, however, after it stops the machine can be set to write another line or a number and will be automatically reset Without further attention, especially during the return movement of the paper-feed.

Another object is to mechanically discharge the sheets of paper from the machine.

To accomplish the results mentioned, I mount a spring on the platen-shaft or other paper-feeding roll which winds tighter as the platen is turned while writing down a sheet of paper. I provide also means for releasing the platen at any desired time, and when the platen is released the spring unwinds and gives the platen a return movement that turns out the sheet or sheets of paper.

Another feature consists in an adjustable stop for engaging the platen-shaft or other paper-feed roll for limiting the rotation of the platen or paper-feed as the writing on the sheet of paper progresses, and also combining with such stop a stop to limit the movement:

of the platen in the backward or reverse di 0 rection.

Another feature is providing an adjustable plate adjacent said adjustable stop, whereby the adjustable stop can be moved from its position and placed on said plate and another line written, and in providing an adj ustablylocated means for engaging said adjustable stop on the return movement of the platen and pushing it back off said plate into the position it occupied before the adjustable stop was moved to enable the writing of an extra line.

The features of my invention will be understood from the accompanying drawings and the following description and claims.

In the drawings, Figure l is plan of the platen and associated parts of the New Century type-writing machine with my attachment thereon, the spring-housing being in horizontal section. Fig. 2 is a cross-section on the line 2 2 of Fig. 1. Fig. 3 is a cross-section on the line 3 3 of Fig. 1, showing the parts in position before the insertion of the paper. Fig.4 isthe same, showing the position of the parts when the rotation of the platen is stopped after the paper has been fed into the machine. Fig. 5 is an enlarged plan of the end of the platen-carrier with my mechanism attached. Fig. 6 is a section on the line 6 6 of Fig. 5. Fig. 7 is a section on the same line as Fig. 4, showing only some of the parts, and those considerably enlarged, and some parts broken away. Fig. 8 is a front elevation of my attachment removed from the machine with the adjustable stop set for the writing of an extra line.

My invention is shown in connection with only one form of type-Writer; but I do not wish it to be limited to one form of typewriter, as it can be placed upon any other style of machine.

In the drawings, 10 is the platen, 11 the platen-shaft, and 12 means for actuating the platen-shaft by hand. The platen-shaft is mounted by suitable bearings on the under side of the cross-bars 13. The platen is also actuated by means of the lever 15, mounted above the cross-arm 13 at the right-hand end and actuatingly secured to the pawl mechanism 16, that engages the ratchet 17 on the right-hand end of the platen. The platen is held in position'by the spring 18, that is secured to the post 19 on the cross-bar 13 of the right-hand end and carries on its free end a roller 20, that rides and presses down upon the ratchet 17. There is also a front horizontal plate 21, secured to the end cross-bars 13, and a rear horizontal rod 22, secured to the same cross-bars, and a second rod 23, secured below the rod 22 and somewhat in front of it in the arms 74 from the rod 22 and which carries a gage-plate 24, that rests against the under side of the platen. A feed-roller 25 is held against the rear part of the platen by the springs 26, the feed-roller cooperating with the platen to feed the paper in and out of the machine in the well-known manner. I will now refer to the attachment I have placed on the machine to carry out the object sought by me.

On the platen-shaft, herein shown at the left end, I secure one end of the coiled spring 30, and the other end is secured to the crossrod 23, as appears in Fig. 2, or the rod 22, as in Fig. 5. Any suitable housing 31 may be provided for such spring, which is here held in place by the forwardly-extending bar 32, that is secured to the upper side of the crossplate 21, and a rcarwardly-extending bar 33, that is secured to the cross-rod 23 in Fig. 1, or the rod 22 in Fig. 5. Said housing has a central opening through it for the passing of the shaft 11 loosely. When the platen is rotated to feed the paper in the machine, the spring will tighten from the position shown in Fig. 3 to the position shown in Fig. 4.

WVhen itis desired to remove the paper from the machine, the roller 20 on the spring 18 is released from its engagement with the ratchet 17 on the platen, whereupon the spring will unwind, turning the platen backward and turning the sheet or sheets of paper out of the machine. The roller 20 is disengaged from the ratchet 17 by the lever 34, that is fulcrumed on the bracket 35, secured to the cross-plate 21, with its inner end extending beneath the spring 18. When the outer end of the lever is depressed, the inner end will elevate the spring and lift the roller 20 out of engagement with the ratchet 17. To stop the rotation of the platen under the action of the spring and after the work has been done, I secure to the platen-shaft the pinion 36 (seen in Fig. 3) and mount a gear 37 in the bracket 38 to mesh with said pinion. The bracket 38 is vertical and the lower end of it turned and secured on the upper side of the cross-bar 13 to the left of the platen. The relative sizes of the gears 36 and 37 are such that the gear 37 will make one rotation while, say, a sheet of legal-cap paper is being fed through the machine. The gear 37 has on its periphery an integral stop 39 in the form of a long tooth, that engages the pinion 36 on the return movement of the plat-en under the action of the spring and stops such movement, leaving the platen in position to receive the paper to be written upon.

To limit the movement of the platen in the forward direction while a sheet of paper is being written upon and the machine operated, I provide an adjustable stop 40, consisting of a flat spring secured by the screw 41 beside the gear 37, so as to be rotated independently of that gear. It has a pin 42, adapted to fit in the notch between any two of the teeth of the gear 37. By pushing the spring-stop 40 at its outer end somewhat away from the gear 37 it can be rotated to a difiercnt position with relation to the gear, and when released the pin 42 will enter the space between the two opposite teeth of the gear 37, which will hold the stop in place until subsequently adjusted.

The extent of the written page will depend on the space on the periphery of the gear 37, that lies between the stop 39 and the adjustable stop 40. If the stop 40 be not used, but be removed, the stop 39 will limit the forward movement of the platen after it has made nearly an entire revolution. Where the paper to be used is always of the same length, such as legal cap, it is possible, therefore, to get along by using only the stationary stop 39.

If while the parts are in the position shown in Fig. 3 a sheet of paper he placed in the machine and the platen operated, the gear 37 will be slowly turned in the direction of the arrow in Fig. 3 until the platen is stopped by the stop 40 engaging the shaft 11, as shown in Fig. 4. Then by actuating the lever 34 the spring 30 will return the platen or paperfeed, and the parts will be changed from the position shown in Fig. 4 to that shown in Fig. 3.

As the parts are arranged in Figs. 3 and 4 the machine will write only a short sheet of paperabout half the length of a sheet of legal cap; but by moving the adjustable stop 40 farther around to the left from the position shown in Fig. 3 the size of the written sheet may be increased.

To enable one to set the adjustable stop 40 after it has stopped the forward action of the machine, so that one could write another line or insert the number of the page, I provide the plate 50, pivoted on the same means as the stop 40 and extending out somewhat beyond the periphery of the gear 37. It is therefore rotatable and is made of spring metal. It carries a pin 51, that is adapted to rest in the notches in the wheel 37. The plate 50 is preferably the width of about three such notches. It can be sprung away from the wheel 37 for adjustment. In operation it is kept adjacent the stop 40, the stop 40 being one notch in advance of it, as shown.

a When operating the machine, the stop 40 reaches its limit of movement, as shown in Fig. 4, and when it is desired to write another line the operator takes hold of the outer end of the stop 40, moves it laterally somewhat and over the plate 50, so that its pin 42 will rest against the plate 50, as shown in Fig. 7. Then the machine can be operated one line farther,when it will be stopped by the plate 50.

When the platen is released and returned by the spring 30, or otherwise, to its unoper- IIO ated position, as shown in Fig. 3, the wheel 37 and stop 40 will be rotated in the direction of the arrow shown in Fig. 4 from the position shown in Fig. 7 to the position shown in Fig. 6, where the stop 40 will be engaged by the cross-arm 53 on the lever 54, that is pivoted on the bracket 38 by the screw 55, and as the gear 37 moves farther the stop 40 will be by the arm 53 pushed backward off the plate 50, so that its pin 52 will spring into the first notch in the wheel 37-that is, in advanceof the plate 50that is, into its original position. For this to operate perfectly it is desirable that the lever 54 be so set that the arm 53 will engage the stop 40 and reset it at its limit of return movement, as shown in Fig. 3. To set the lever 54, I show a segmental rack 56, that is secured to the bracket 38 and has lateral teeth for engaging a flange 57 on the lever 54.

What I claim as my invention, and desire to secure by Letters Patent, is-

1. In a type-writing machine, the platen, a ratchet thereon, a pawl engaging the ratchet for holding the platen from backward rotation, a spring for returning the platen when released, and means for disengaging the pawl from the ratchet for releasing the platen, whereby the platen Will be returned to its original position.

2. In a type-writing machine, the platen, a shaft on which it is mounted, a spring to rotate said platen backward secured at oneend to said shaft and coiled about the same and at the other end held stationary means for rotating the platen and shaft forward against the action of the spring, a ratchet on the platen, a spring-actuated pawl that engages said ratchet, and a lever for disengaging the pawl from the ratchet, whereby the platen Will be returned to its original position.

3. In a type-writing machine, the platen, a shaft, and a stop that rotates with the platen and engages the shaft to limit the forward movement of the platen.

4. In a type-writing machine, the platen and shaft, a rotating stop that engages the shaft, and a gear connection between the platen and stop.

5. In a type-writing machine, the platen and shaft, a spring to return the platen and shaft after actuation, a pinion on the shaft, a gear mounted independent of the shaft that meshes with the pinion, and a stop for limiting the action of the gear.

6. In a type-writing machine, the platen and shaft, a pinion secured on the shaft, a gear mounted independent of the shaft that meshes with said pinion, and a stop on the periphery of said gear that engages said pinion and stops the rotation of it and the platen in either direction.

7. In a type-writing machine, the platen, a stop that rotates with the platen for limiting the forward rotation thereof, and a spring for returning the platen to its unoperated position.

8. In a type-writing machine, the platen, means for actuating it, a stop that rotates with the platen for limiting the forward actuation thereof, and a spring for returning the platen to its unactuated position.

9. In a type-writing machine, a platen, means rotating with the platen for limiting the forward rotation thereof, means for limiting its rearward rotation, and a spring for returning the platen after it has been rotated.

10. In atype-writing machine, the platen, means for rotating the same in one direction, a spring for returning it in the opposite direction,and means that rotates with the platen for limiting the rotation of the platen in both directions.

11. In a type-writing machine, the platen and shaft, a pinion secured on the shaft, a gear mounted independent of the shaft and meshing with said pinion, a stop on the periphery of the gear which engages the pinion when the platen is moved in a forward direction and stops such movement, and a spring for rotating the platen in the opposite direction until said stop on the gear in the return movement engages the other side of the pin ion and stops such return movement of the platen.

12. In a type-writing machine, the platen, means for rotating it, a stop for limiting the forward actuation of the platen, a spring for returning the platen, and a stop for limiting such return movement thatis adjustable with relation to the other stop.

13. In a type-writing machine, the platen and shaft, a pinion secured on the shaft, a gear mounted independently of the shaft and meshing therewith, a stop connected with said gear for limiting the movement of the platen in one direction, and another stop connected with said gear for limiting the movement of the platen in'the opposite direction, one of said stops adjustable with relation to the other.

14. In a type-writing machine, the platen and shaft, a pinion secured on said shaft, a gear mounted independently of the shaft and meshing therewith, a stationary stop on the periphery of the gear for stopping the platen when moved in a forward direction, a spring for returning the platen in arearward direction, a flat spring-stop pivotally mounted beside the gear extending beyond the periphery thereof to engage the shaft, and a pin in it adapted to extend between two teeth of said gear, whereby said stop is adjustable.

15. In a type-writing machine,a paper-feeding means, a stop for limiting the forward operation thereof, and means for releasing said stop whereby the paper-feeding means may be operated further and stopped.

16. In atype-writing machine,a paper-feeding means, a stop to limit the forward operation thereof, and means for resetting said stop after its position has been altered to per- 1 mit further operation of the paper-feeding means and stopping the same.

17. In a type-writingmaehine, a notched wheel mounted to rotate with the paper-feedingn1eans,aspringm0unted beside said wheel with a pin in it to engage the notches in the wheel, a spring-plate mounted between said stop and the wheel with also apin in it to engage the notches in the wheel whereby the spring stop may be disengaged from the 1 notches in the wheel and placed upon said plate, and means for engaging said springstop in its return movement and pushing it back oil said plate to reset it.

In witness whereof I have hereunto afiixed mysignature in the presence of the Witnesses herein named.

. CHARLES F. ECKERT. \Vitnesses:

FLORENCE E. BRYANT, V. H. LooKWooD. 

